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Proceedings Paper

Sounding of the atmosphere using broadband emission radiometry (SABER): sensor design, performance, and lessons learned
Author(s): Steven B. Brown; Mark Jensen; Scott Jensen; Glen Hansen; Lorin Zollinger; Roy Esplin; James B. Miller
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Paper Abstract

The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument, a 10-channel infrared (1.27 - 16.9 μm) radiometer, was launched on the TIMED (Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics) satellite in December 2001 from Vandenburg Air Force Base. SABER is being used to measure earthlimb emissions and to characterize infrared radiation, allowing calculation of cooling rates and determination of composition and temperature profiles in the mesosphere, lower thermosphere, and ionosphere (60-180 km). The SABER telescope is an on-axis Cassegrain design with a picket-fence tuning fork chopper at the first focus and a clamshell re-imager to focus the image on the focal plane. The telescope was designed to reject stray light from the Earth and atmosphere outside the instrument's instantaneous field-of-view (IFOV). The baffle assembly contains a single-axis scan mirror, which permits the 2 km vertical IFOV of each detector to be scanned from the Earth to a 400 km tangent height. The telescope and baffle assembly are cooled to 220 K by a dedicated radiator. The focal plane assembly is cooled to 75 K by a miniature cryogenic refrigerator. Field programmable gate arrays are used to implement state machine algorithms for control and operation of the instrument and subsystems. Although originally designed for a two-year lifetime requirement, the SABER instrument has been in continuous operation since January 2002. This paper discusses the SABER instrument design and innovations developed to achieve the required performance, along with instrument performance and lessons learned from the program.

Paper Details

Date Published: 7 September 2006
PDF: 12 pages
Proc. SPIE 6297, Infrared Spaceborne Remote Sensing XIV, 62970U (7 September 2006); doi: 10.1117/12.684137
Show Author Affiliations
Steven B. Brown, Utah State Univ. (United States)
Mark Jensen, Utah State Univ. (United States)
Scott Jensen, Utah State Univ. (United States)
Glen Hansen, Utah State Univ. (United States)
Lorin Zollinger, Utah State Univ. (United States)
Roy Esplin, Utah State Univ. (United States)
James B. Miller, NASA Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 6297:
Infrared Spaceborne Remote Sensing XIV
Marija Strojnik, Editor(s)

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